Self-learning Room Temperature Controller

Transcription

1 2 252 Self-learning Room emperature Controller with one weekly operating mode including individual 24-hour modes and three 24-hour modes, cooling function REV22 Use Mains-independent room temperature controller featuring straightforward operation and an easy-to-read display. Self-learning two-position controller providing PID control (patented). Choice of three different 24-hour operating modes and one weekly mode including individually adjustable 24-hour modes. Control of cooling equipment. Room temperature control in: Single-family and holiday houses Apartments and office spaces Individual rooms and consulting rooms Commercially used spaces For the control of the following pieces of equipment: Solenoid valves of instantaneous water heaters Solenoid valves of atmospheric gas burners Forced draught gas and oil burners Electrothermal actuators Circulating pumps in heating systems Electric direct heating Fans of electric storage heaters Zone valves (normally closed) Cooling and refrigeration equipment Functions PID control Self-learning or adjustable switching cycle time Weekly time switch Remote operation Preselected 24-hour operating modes Override button Reset function Detector calibration Setting check Holiday mode Cooling Frost protection function Minimum limitation of set point Pump kick Optimum start control in the morning (P.1) Siemens Building echnologies CE1N2252E / Landis & Staefa Division 1/8

2 ype summary Room temperature controller with weekly time switch Room temperature controller with weekly time switch and remote operation connection facility REV22 REV22 Ordering Delivery Mechanical design When ordering, please give type reference according to "ype summary". he unit is supplied with batteries. Plastic casing with an easy-to-read display, easily accessible operating elements and removable cover. he removable battery compartment allows straightforward replacement of the two 1.5 V alkaline batteries. he base plate can be fitted to all commercially available recessed conduit boxes or directly on the wall and can then be wired before fitting the controller to it. he casing accommodates the electronics with the three DIP switches. he potential-free changeover contact and the connection terminals are located on the base plate. Display and operating elements COOLING C Day/ Auto P.1 P.2 P.3 P.4 P.5 P.6 Run Auto V 'AA' Day V 'AA' 2252Z07 1 Display 3 Standby with frost protection Normal temperature Economy temperature Block/day Switching pattern with flashing time cursor Heating/cooling on COOLING Cooling mode Remote operation active (REV22) Holiday mode Battery change ime of day 1 Weekday Room temperature (measured) Active normal temperature 2 Battery compartment 1.5V 'AA' 1.5V 'AA' wo alkaline batteries 1.5V (AA) 3 Setting slider Day/ ime/weekday 6-7 Switching pattern allocation 7 Block/day P.1 P.2 P.3 P.4 P.5 P.6 Switching times P.1 P Normal temperatures 1 3 Economy temperature Holiday mode Auto Run Operating position 4 Setting buttons Day Block/day button Switching pattern button Set values lower Set values higher 5 Operating mode selector Auto 7 Weekly mode with up to three heating periods per day 24-hour mode with one heating period 24-hour mode with two heating periods 24-hour mode with three heating periods 3 Continuous normal temperature Continuous economy temperature Standby with frost protection 6 Override button 7 Warmer/colder buttons CE1N2252E / Siemens Building echnologies 2/8 Landis & Staefa Division

3 Operating modes Auto 7 3 Weekly mode with up to three heating periods per day 24-hour mode with one heating period 24-hour mode with two heating periods 24-hour mode with three heating periods Continuous normal temperature Continuous economy temperature Standby with frost protection Set points Standard heating Setting range Setting range with set point limitation Standard cooling 1 19 C 3 29 C C 23 C 2 20 C 3 29 C C 23 C 3 21 C 3 29 C C 23 C 16 C 3 29 C C 29 C In the weekly and 24-hour operating modes, the set points are freely adjustable. Fixed is only an overtemperature protection of 29 C in cooling mode. Weekly time switch o simplify the entry of switching times, there are tree different switching patterns available. hese can be assigned to the respective weekdays 1 5 and weekend days 6 7 in the form of blocks. his means that with each block, the respective switching times and room temperatures need to be adapted only once. Switching patterns Blocks Z Z08 It is also possible to make individual entries of the individual days 1 7. Override button Manual changeover between normal and economy temperature. his manual action will automatically be reset when the next switching action takes place or when the operating mode changes. Setting check Holiday setting Day 6-7 When pressing the button 7 in the weekly mode Auto 7, the selected switching patterns of the individual days will be displayed, one by one, each for three seconds. Entry of start and duration of the holiday period. In that case, the controller will switch to economy mode at the beginning of the holiday period. he display shows, with the holiday symbol and the number of remaining days in the holiday period, as follows: Z15 On completion of the holiday period, the controller will resume the selected operating mode (e.g. Auto 7 ). Siemens Building echnologies CE1N2252E / Landis & Staefa Division 3/8

4 Calibration of detector If the displayed room temperature does not agree with the measured temperature, the temperature detector can be recalibrated. Day/ When the setting slider is set to the position, press button. hen, the display will change as follows: Z14 By pressing button or, the temperature can be changed in increments of 0.2 C (max. ±2 C). On completion of the readjustment, the setting slider must be reset to the Auto/Run position. Reset When pressing buttons and simultaneously, all individual settings will be reset to their standard values. Resetting also serves as a display check: COOLING Z13 After a reset, all individual settings such as time, day, switching times, etc., must be reentered. Remote operation (REV22) With the help of a suitable remote operation unit, the REV22 can be switched to the economy temperature set for operating mode. Changeover takes place through the making of a potential-free contact connected to terminals 1 and 2. he display indicates this with the symbol. After the contact opens, the selected operating mode becomes active again. Operation according to the settings made on the controller 1 Continuous economy temperature Z Z06 Suitable remote operation units are: elephone modem, manual switch, window switch, presence detector, central unit, etc. CE1N2252E / Siemens Building echnologies 4/8 Landis & Staefa Division

5 echnical features DIP switch 1 OPIMUM P.1 OFF P.1 1/4h / C 1/2h / C 1h / C Z01 Optimum start control Optimisation brings forward the switch-on point P.1 such that the selected set point will be reached at the desired time. he setting depends on the type of control system in use, that is, on heat transmission (piping system, radiators), building dynamics (building mass, insulation), and heating output (boiler capacity, flow temperature). he optimisation is set with DIP switch 1 as follows: OFF 1/4h/ C 1/2h/ C 1h/ C No effect For fast controlled systems For medium controlled systems For slow controlled systems C P on R x h/ C - 4 h - 3 h - 2 h - 1 h P.1 1/2h/ C - 2 h - 1½ h - 1 h - ½ h 1/4h/ C - 1 h - ¾ h - ½ h - ¼ h t 2252D01 emperature ( C) R x Actual value of room temperature t Forward shift of switch-on point (h) P on Starting point for optimum on DIP switch C C HEAING COOLING PUMP OFF PUMP ON Z02 Limitation of set point Cooling Periodic pump run (pump kick) When using minimum limitation of set point to 16 C, undesired heat transfer to neighbouring flats is prevented in buildings that have several heating zones. he function can be selected with DIP switch 2. DIP switch 2 is used for switching over to cooling mode when used in cooling applications. he setting is made with DIP switch 2 while the pump is running. Protects the pump against seizure during longer OFF periods. he periodic pump run is activated for one minute every 24 hours at 12:00 h. Siemens Building echnologies CE1N2252E / Landis & Staefa Division 5/8

6 DIP switch 3 Self learning PID 12 PID 6 2-Pt 5 C 3 C 10 C Z03 Control Self-learning mode Exceptional cases Frost protection he REV22 is a two-position controller providing PID control. he room temperature is controlled through the cyclic switching of a regulating unit. he controller is supplied with an active self-learning mode, which enables it to automatically adapt to the controlled system (type of building construction, type of radiators, size of rooms, etc.). After a certain learning period, the controller optimises its parameters and then operates in the mode it has learned. In exceptional cases, where the self-learning mode may not be adequate, it is possible to choose PID 12, PID 6 or 2-Pt mode: PID 12 mode Switching cycle of 12 min for normal or slow controlled systems (e.g. massive building structures, large spaces, cast-iron radiators, oil burners). PID 6 mode Switching cycle of 6 min for fast controlled systems (e.g. light building structures, small spaces, plate radiators or convectors, gas burners). 2-Pt mode Pure two-position control with a switching differential of 0.5 C (±0.25 C) for very difficult controlled systems with considerable outside temperature variations. Frost protection is adjustable with DIP switch 2, either 3 C, 5 C, or 10 C. echnical data Operating voltage DC 3 V Batteries (alkaline AA) 2 x 1.5 V Battery life approx. 2 years Backup for battery change 1 min max. -conformity to EEC directive 89/336/EEC low voltage directive 73/23/EEC Switching capacity of relays Voltage AC V Current 6 (2.5) A Measuring element NC 68 kω at 25 C Measuring range 0 40 C ime constant max. 2 min Set point setting range Normal temperature 3 29 C Economy temperature 3 29 C Set point for frost protection Adjustable 3 / 5 / 10 C Factory setting 5 C Resolution of settings and display Set points 0.2 C Switching times 10 min Measurem. of actual value 0.1 C Display of actual value 0.2 C ime display 1 min Insulation class to EN II Degree of protection to EN IP30 Electromagnetic compatibility Immunity EN Emissions EN Perm. ambient temperature Operation 3 35 C Storage C Perm. ambient humidity to DIN G Weight 0.24 kg Colour White RAL9003 Notes Engineering he room temperature controller should be fitted in the main living room. he place of installation should be chosen so that the sensor can capture the room temperature as accurately as possible, without being affected by direct solar radiation or other heating or cooling sources. Mounting height is approx. 1.5 m above the floor. he unit can be fitted to most commercially available recessed conduit boxes or directly on the wall. CE1N2252E / Siemens Building echnologies 6/8 Landis & Staefa Division

7 Fitting and installation Commissioning When installing the room temperature controller, the base plate must first be fitted and wired. hen, the unit is engaged at the top, swung downward and secured with a screw. For more detailed information, please refer to the installation instructions supplied with the controller. For the electrical installation, the local safety regulations and standards must be complied with. he remote operation contact 1 / 2 must be wired separately, using a separate shielded cable. he battery transit tab, which prevents inadvertent operation of the unit during transport and storage, must be removed from the batteries. he control characteristics can be changed with the help of the DIP switches located at the rear of the unit. For detailed information, please refer to the commissioning instructions. If the reference room is equipped with thermostatic radiator valves, they must be set to their fully open position. If the displayed room temperature does not agree with the measured room temperature, the temperature detector should be recalibrated (please refer to "Calibration of detector") Connection diagrams AC V L 2252A01 AC V L 2252A02 L2 L1 1 2 L2 L1 S1 N Y1 N Y1 REV22 REV22 L Live, AC V S1 Remote operation unit (potentialfree) L1 N.O. contact, AC V / 1 Signal "remote operation" 6 (2,5) A L2 N.C. contact, AC V / 2 Signal "remote operation" 6 (2,5) A Circulating pump Y1 Regulating unit REV22 controller Siemens Building echnologies CE1N2252E / Landis & Staefa Division 7/8

8 Application examples F1 F2 F2 F1 Y2 Y2 2252S S02 Instantaneous water heater Atmospheric gas burner Y3 Y4 2252S03 E1 2252S05 Zone valve Cooling equipment Y1 2252S04 Circulating pump with precontrol by manual mixing valve E1 Refrigeration unit Y1 Manually operated three-port valve F1 hermal reset limit thermostat Y2 Solenoid valve F2 Manual reset safety limit thermostat Y3 Motorised three-port valve Circulating pump Y4 Motorised two-port valve REV22 room temperature controller Dimensions , M M Siemens Building echonologies Ltd. Subject to alteration CE1N2252E / Siemens Building echnologies 8/8 Landis & Staefa Division